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Search: id:A131046
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| 1, 4, 11, 29, 71, 168, 389, 884, 1978, 4375, 9592, 20874, 45124, 96979
(list; graph; listen)
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OFFSET
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1,2
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FORMULA
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Binomial transform of sigma(n), A000203.
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EXAMPLE
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a(4) = 29 = (1, 3, 3, 1) dot (1, 3, 4, 7) = (1 + 9 + 12 + 7).
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CROSSREFS
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Cf. A000203, A007318.
Sequence in context: A036881 A055418 A062432 this_sequence A109803 A027968 A027970
Adjacent sequences: A131043 A131044 A131045 this_sequence A131047 A131048 A131049
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KEYWORD
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nonn
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AUTHOR
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Gary W. Adamson (qntmpkt(AT)yahoo.com), Jun 11 2007
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